By Asura.Karbuncle 2010-10-01 17:08:20
Complicated Answer:
There is an Absolute cap on how many Targets a Spell/BP Can hit, I think its in the high 30's? or was it the 50's, Either way theres a Cap.
Which each added Target the Accuracy lowers, and continues to lower.
With maximum targets in range, You can (Assumed) KO Every target, However it would be a low low low low low chance.
That being said, 5/6 Mobs is a sweet spot, usually K.O'ing the majority of them, so i'd keep it at that.